Apparatus for analyzing gases.



PATENTED MAY 2l, 1,967.

JGNES.

EPRATUS FR NLYZING GASES.

' APPLIOATIOE fum Mov. 21, 190e.

WLLIAM JONES, OF NEW YORK, N.

PATENT FFllQH,

ASS [GN UR TQ TH E JONES-IUMA MFG. C l., QF NEW YORK, N. Y., A CORPGRATION UF NEW YGRK.

Specification of Letters Pater t.

Patented May 21., 1907.

Application led November 2l, 1906. Serial No, 344,404.

To CLZ whom it may concern Be it known that I, WiLLrAM JONES, a subject of the King of Great Britain, and a resident of New York, in the county ot' New York and State of New York, with postolliee address 605 West One Hundred and lhirty-seventh street, have invented certain new and useful Improvements in Apparatus for Analyzing Gases, of w'hioh the following is a speeilioation. y

This invention relates to anapparatus for analyzing a continuous stream ol gas for the ur ose of aseertainino the )ereentaee of aV P e i.

constituent thereof.

lt has been proposed heretofore to ascertain the percentage of constituent by feeding the continuously in limited amount through an absorbent, and determining the value of the constituent by the change oi tension produced by the removal ol such yeenstituent by the absorbent as indieated upon a suitable manometer.

T his method is open to the objection that a elia-nge in the pressure or tension at whieh led to the instrument will Cause tion the tension of the gas in the space i ith whleh th. manometer is eonneeted and will therefore atleet the reading ol the instrument, and llene-i with this method the results will be only accurate for a given pressure lor whieh the apparatus has been adjusted and. which hasbeen kept stationary. The accuracy olf the reading will likewise be alleeted by ehanges at the vacuum or suetion end ol the system fora similar reason. The object olf thepresent invention is to overcome this objection, to which end the invention Consists.substantially in feeding the ,eas in two streams, absorbinji` an absorb? sble constituent thereolZ from one ol' said streairis passing in limited amount tlu'ough the absorbent and then through a Chamber in which the tension may be observed and utilis/,infr the ditte-renee between the changed tension or pressure thus produced and the tension or pre sure ol the otherstream as an Ladieation of the percentage of such oonstituent.

ln carrying outthe inventiorrtbe limited llow of gas in the. Chamber or chambers whosediilerenee of pressure is measured, is preterably secured by connecting them with the pressure and exhaust pipes through ni of the gas through the absorbent for one of i the streams, if is preferable to employ a nonabsorbiiw so. tion in. the path of the other stream. l`o see-ure a reading due to the difterence of tension in the streams of gas, the

two sides of the manometer may be oon-'- neeted respectively to the chambers or spaces through ulrich the streams of gas flow in limited amount, as hereinafter more particularly desrribod. 'Under this Condition the` manonmtri uill respond properly to differences ol ir- 'ou between the two streams. but it will be@ lettori alike on its two sides by any chater-s in the diilerenee of tension between the izilel, or supply and the exhaust or suotion ends ot the stream respectively and the readings will not be disturbed as already set foi-th.

My inveruion is designed to be used in oonneetion with furnaces to shovvthe percentage ot CO, in the gases passing' through the flue, thus hud-:lug it possible toregulate the amount of air to insure proper oombustion ollv the fuel. lt is, hmvever, obviously useful for the testing ol' any mixture ol gases by the use` of a proper absorbent. ,in the aoemupanyinfr drawings, l show in sirie elevation an apparatus by which my invention may be praetioed.

il the supply end ol the system through which gas is ted after 'passing'any necessary filter or condenser.

fr is the'suetion or exhaust end o l' -the system, the 'flow of `as being due to the diilerence in tension or pressure between B and A i as well understood in the art.

and escapes through'a similar' minute outlet 3 to the suction end A of the system. The other stream passes in a similar manner through a minute inlet and outlet 2 and 3. By these means, a limited amount of gas only can pass and a/certain amount of vacuum will be produced in the chambersor passages located between 2 and 3 and between 2 and 3. Between 2 and 3 is located the absorption chamber compi ising, for instance, a tank D containing a solution of caustic potash or other absorbent.

At 4 or at any other suitable point wherethe tension of the gas lfeeding from B is changed from the normal, owing to the absorption of the constituent CO,L or other gas, a pipe is led to one side of a suitable manometer as at F. At 4 in the pipe or 'passage between 2 'and 3 connectionis made to the other Side E of such manometer.

Preferably, I interpose in the connection from 2 to 3 another tank C containing anonabsorbing solution through which the gas is caused to pass so that by regulatingthe depth of immersion oi the tubes 5 and 6, the resistance to the passage of the gas in the two chambers or passages may be adjusted to produce a tension which would be the samel ii" the gas were of such nature as not to be absorbed or modified in respect to its constituents by passage through either oneI of thc tanks l) or C. Owing to the system oi' connections it is obvious that the changes of tension at 4 Iand 4 will be the same if caused by any chal'ige or difference of tension between B and A lf now gas containing carbon dioxid be passed through the apparatus, it will be absorbed in the potash s olution 'in D and the equilibrium in the manometer will be disturbed and the liquid in the measuring tube of the manometer connected to -F will risc ,in direct proportion to the amount oi gas removed by the solution in I). This reading enables the operator to ascertain the percentage of said constituent CO2 in the well vknown way.

The form of manometer sho Yn has a slop ing or inclined graduated tube n the side-F of very small internalv diameter which in practic(` may be 3 millimeters. At the other end E a large tube or bottle is employed so that practically all the movement due to changes of pressure will be inthe small tube. The capillary attraction in the small tube causes its surface to stand at right angles to the bore oi the tube instead of occupying a horizontal ilane. The apparatus may be arranged to indicate one per cent for each one-fiftiet-h of an inchpof vertical rise, by inclining the small tube at such an angl(` that this movement is multiplied by ten. Thus if the tube rises 'l in 10, the'liquid in rising one-fitieth will move one-ifth ot an inch in the bore of the tube'for each per cent.

4To bring the apparatus to scale or to regstronger while by raising it the vacuum will 7 be decreased owing to the admission of air oi' gas through G. A.manometer H filled with glycerin may be used tov indicate the degree of suction or t'acuum.

l As will be seen, my invention (-lifcrsessen- 8- tially Jromprior methods in that I employ a secondstream of gas in addition to thatwhich 1s passed through the absorbent and by such two streams balanced against one another in the manometer compensate for changes in the tension at the sup ly B or suction A so that the manometer willjrespond aloneto changes in the tension ofgas produced by thel action `of the absorbent and. will at all times r-ead correctly.

Vhat I claim as my invention is: l

1. In an apparatus for analyzing gases; the combination of means for causing `the gas to ilow in two streams through two chambers or passages, means for' absorbing 95 a constituent of the gas in passing through one of said chambers, and means for giving a continuous indication of the dill'erenceof tension of the gases in the two streams by' causing their pressures to oppose one another loc thus permitting the percentage of the con-` stituent removed to be observed without disturbance'from fluctuations in the'pressure at which the gas is supplied or removed.

2,-In an apparatus for analyzing 'gases, ioj the combination of two chambers y through each of which a stream of the gas to be analyzed is 'passed in limited amount as de` scribed, one of said chambers being provided with an absorbingV and the other with a nonnc absorbing solution, and a manometer the o posite sides of which are connected .Bald chambers respectively so as to be vsubject'Y respectively to the tension of the gas injsaid cham-bers, whereby its readings will'bedue 115 to the difference between the tension )result-` Aing from the removal of Athe constituent whose percentage is to be measured fromn one stream, and the tension of the gasin the other stream.

November A. D. 1906.

YVILLIAM JONES.

Witnesses:

C. F. l`rsenNnn,Jr., LILLIAN BLOND.

. IAQ@ Signed at New York in the county of New York and State of New York this '19th day of 

